Given you have a valid CouchDbInstance instance, you connect to a database within CouchDB in the following manner
CouchDbConnector connector = dbInstance.createConnector("databaseName", true);
FirebaseUI offers Android, iOS, and Web clients. You can get started with them like so:
Android:
// app/build.gradle
dependencies {
// Single target that includes all FirebaseUI libraries
compile 'com.firebaseui:firebase-ui:0.5.2'
// FirebaseUI Database only
compile 'com.f...
Let's say we have multiple data sources which include database, file, prompt and argumentList. Depending on chosen source we change our approach:
def loadData(dataSource: Symbol): Try[String] = dataSource match {
case 'database => loadDatabase() // Loading data from database
case 'file =&g...
The UWP applications can run in windowed mode and on several devices. They can be displayed on a wide range of screen sizes from low end phones to the huge surface hub screen. Using relative positioning will be enough for a lot of scenario but as the window size increases, it is always interesting t...
Sometimes you need to set the same data in many of your views.
Using View::share
// "View" is the View Facade
View::share('shareddata', $data);
After this, the contents of $data will be available in all views under the name $shareddata.
View::share is typically called in a service p...
We can add adaptivity to any subclass of UIView which we add on view controller in nib file.
Lets take an example of adding adaptivity using size classes to a view.
Add a view on view controller as:
Now we need to pin this view to it's superview for fixing it's size and position using con...
If you want to detect missings with
df=pd.DataFrame({'col':[1,np.nan]})
df==np.nan
you will get the following result:
col
0 False
1 False
This is because comparing missing value to anything results in a False - instead of this you should use
df=pd.DataFrame({'col':[1,np.nan]})
...
Pandas don't support missing in attributes of type integer. For example if you have missings in the grade column:
df= pd.read_csv("data.csv", dtype={'grade': int})
error: Integer column has NA values
In this case you just should use float instead of integers or set the object dtype.
...
let doc = require('dynamodb-doc');
let dynamo = new doc.DynamoDB();
var tblName = "MyTable";
exports.handler = (event, context, callback) => {
readOperation(context);
}
function readOperation(cnxt) {
var params = {
TableName: tblName,
Key: {
"id": ...
Model.url and Collection.url are only used internally by the default Backbone.sync method. The default method assumes you are tying into a RESTful API. If you are using a different endpoint design, you will want to override the sync method and may want utilize the url method.
var Model = Backbone.M...
For a more real time solution you can use watchPosition function in Geolocation that notifies whenever an error or a position change occurs.
Unlike the getCurrentPosition the watchPosition returns an Observable
import {Geolocation} from 'ionic-native';
import template from './custom-component.htm...
Sometimes a component needs to render some data from a remote endpoint (e.g. a REST API). A standard practice is to make such calls in componentDidMount method.
Here is an example, using superagent as AJAX helper:
import React from 'react'
import request from 'superagent'
class App extends Rea...
Checking Requirements
Run bin/symfony_requirements for checking symfony requirements and php cli setting. Install all packages that needed to run a symfony project. Setting your php.ini for example setting timezone and short_open_tag. Setting both php.ini for your php webserver (eg: /etc/php/apache...
Assume the following enum:
enum Operation {
Multiply(left : Int, right : Int);
}
Enum matching can be performed as follows:
var result = switch(Multiply(1, 3)) {
case Multiply(_, 0):
0;
case Multiply(0, _):
0;
case Multiply(l, r):
l * r;
}
Ref...
Assume the following structure:
var dog = {
name : "Woofer",
age : 7
};
Enum matching can be performed as follows:
var message = switch(dog) {
case { name : "Woofer" }:
"I know you, Woofer!";
case _:
"I don't know you, so...
var result = switch([1, 6]) {
case [2, _]:
"0";
case [_, 6]:
"1";
case []:
"2";
case [_, _, _]:
"3";
case _:
"4";
}
References
"Array matching", Haxe manual
